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TRUCK SERVICE MANUAL
TM 5-4210-230-14&P-1
COOLING SYSTEM
COOLING SYSTEM
GENERAL
CONTENTS
Subject
Page
INTRODUCTION .............................................................................................................
3
COOLANT:
Coolant Selection.........................................................................................................
3
1. Water ................................................................................................................
3
2. Antifreeze...........................................................................................................
3
3. Coolant Conditioners..........................................................................................
4
COOLANT SYSTEM COMPONENTS ..............................................................................
4
A. Radiator .................................................................................................................
5
B. Engine Water Jacket...............................................................................................
7
C. Water Pump...........................................................................................................
7
D. Fan and Belts.........................................................................................................
7
E. Thermostat.............................................................................................................
7
F. Hoses and Clamps..................................................................................................
7
G. Transmission Oil Cooler.........................................................................................
7
EFFECTS OF COOLING SYSTEM NEGLECT.................................................................
8
COOLING SYSTEM MAINTENANCE:
A Cooling System Inhibitors........................................................................................
8
1. Systems with Coolant Filters..............................................................................
8
2. Systems without Coolant Filters.........................................................................
8
3. Coolant Testing for Inhibitor Strength.................................................................
8
B. Draining the Cooling System...................................................................................
8
C. Cleaning the Cooling System .................................................................................
8
D. Pressure Flushing...................................................................................................
9
E. Test Equipment ......................................................................................................
9
1. SE-1870 Pressure Tester...................................................................................
9
2. Hydrometer........................................................................................................
10
3. SE-2384 Pressure Tester...................................................................................
10
4. SE-2395 Antifreeze and Battery Tester...............................................................
10
TROUBLE SHOOTING....................................................................................................
11
CTS-2019P Page 1
PRINTED IN UNITED STATES OF AMERICA
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